#include <stdio.h>
#include <unistd.h>

int main()
{
    int cnt = 0;
    while(1)
    {
        int ret = fork();
        if(ret < 0)
        {
            printf("fork fail! cnt: %d\n", cnt);
            break;
        }
        else if(ret == 0)
        {
            // child process
            while(1)
            {
                sleep(1);
            }
        }
        // parent process
        ++cnt;
    }
    
    return 0;
}
